Medic

Medkits allow you to heal a teammate and yourself. Healing is an action that takes time and you have to be in close proximity to the ally being healed, using 5 energy points per heal action. The default initial range to start healing is 5 meters and the healing will continue as long as the target stays within 8 meters of the medic.

Defibrillators allow you to revive fallen comrades. The time which this is possible, depending on the game mode, is from 15 to 30 seconds. During this period, the "dead" soldier has a red icon with a pulse and a timer, meaning that the medic still has a chance to revive them. For the revival, you will need 100 energy points, all of which will be spent. Thus, you will not be able to revive a comrade while the energy points are not full. Defibrillators can also be used as a weapon, dealing 4 damage for each energy point remaining.

Both Medkits and Defibrillators share the same "ammunition", 100 energy points, which is completely restored within 10 seconds.

Engineer

Armor Kits allow you to repair the armor points of a teammate and yourself. Repairing is an action that takes time and you have to be in close proximity to the ally having their armor repaired, using 5 energy points per repair action. The default initial range to start repairing is 5 meters and the repairing will continue as long as the target stays within 8 meters of the engineer.

Armor Kits have 100 energy points, which are restored completely within 10 seconds.